DJ ARVERNE GROUP: Arverne announces a total exploration potential of up to 43 million tons of lithium carbonate equivalent (LCE), strengthening the outlook for its Lithium de France project in Alsace
ARVERNE GROUP
ARVERNE GROUP: Arverne announces a total exploration potential of up to 43 million tons of lithium carbonate equivalent
(LCE), strengthening the outlook for its Lithium de France project in Alsace
14-Sep-2026 / 08:00 CET/CEST
Dissemination of a French Regulatory News, transmitted by EQS Group.
The issuer is solely responsible for the content of this announcement.
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Arverne announces a total exploration potential of up to 43 million tons of lithium carbonate equivalent (LCE),
strengthening the outlook for its Lithium de France project in Alsace
Pau, September 14, 2026 - Arverne (FR001400JWR8 - ARVEN), the leading French supplier of geothermal solutions,
announces the results of the independent lithium resource assessment of its Exclusive Exploration Permits (PERs)
portfolio in Alsace, conducted by Sproule ERCE.
Sproule ERCE Confirms the Scale of Arverne's Geothermal Lithium Resources
Sproule ERCE, a leading international consultancy specializing in resource evaluation and certification, has estimated
[1] Indicated and Inferred[2] Resources of 26 million tons of lithium carbonate equivalent (LCE), together with a total
exploration potential[3] of up to 43 million tons of LCE across Arverne's Exclusive Exploration Permits (PERs) in
Alsace. The assessment was carried out by a multidisciplinary team of geoscience and reservoir engineering experts
specializing in the evaluation and modelling of geothermal resources and their lithium content. It follows the
acquisition of significant new data, including the 3D seismic exploration campaign and the drilling of the first two
wells at Schwabwiller. Covering the Les Sources Alcalines, Plaine du Rhin, Les Poteries Minérales, and Les Coteaux
Minéraux[4] exploration permits, the report confirms the robustness of the initial assessments carried out in 2022 and
2023.
A total exploration potential significantly exceeding the Lithium de France project's requirements
The total exploration potential significantly exceeds the requirements of Lithium de France's development plan and
confirms the long-term potential of Arverne's geothermal and lithium-bearing asset portfolio in Alsace.
A Key Step Toward Reserve Certification
This independent assessment marks a new milestone in the valuation of Arverne's geothermal lithium assets and further
demonstrates the robustness of its subsurface modelling. The next certification phase, focused on reserves, is expected
in the first quarter of 2027 and will represent a key milestone in the development of the Lithium de France project.
Pierre Brossollet, Founder and Chief Executive Officer of Arverne, commented:
"The results of the independent assessment conducted by Sproule ERCE are extremely encouraging. The estimate of a total
exploration potential of up to 43 million tons of lithium carbonate equivalent confirms the scale of the lithium
potential across Arverne's permit portfolio in Alsace and highlights the significant resources available in France.
These findings also demonstrate that Europe possesses, beneath its feet, part of the solution: the resources needed to
strengthen its strategic and industrial independence. Against a backdrop of rapidly growing lithium demand, they
further reinforce the fundamentals of the Lithium de France project, which has the potential to support production for
30 years and meet the annual needs of approximately 800,000 electric vehicles. True to our mission-driven company
status, we are developing this project with the ambition of combining industrial sovereignty, sustainable value
creation for local communities, and environmental stewardship."
Upcoming Events
23/09/2026 after market close: Half-Year Results Press Release
24/09/2026 at 2:30 p.m. (CEST): Conference call for institutional investors (French), Registration
24/09/2026 at 4:00 p.m. (CEST): Conference call for institutional investors (English), Registration
29/09/2026 at 6:30 p.m. (CEST): Conference call for retail investors, Registration
About ARVERNE
ARVERNE is the leading French supplier of geothermal solutions. It specialises in harnessing natural ground resources
to transform them into local energy sources for heating and cooling systems and to extract lithium. A mission-driven
company listed on Euronext Paris, Arverne works for local authorities and industrial companies with a focus on energy
sovereignty and short supply chains.
www.arverne.earth/en
Press relations: Enora Budet enora.budet@seitosei-actifin.com +33 (0)6 72 17 84 60
Investor relations: Mathilde Guillemot investor.relations@arverne.earth +33 (0)6 64 18 35 55
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[1] This independent study was conducted in accordance with the internationally recognized mining standard NI 43-101.
[2] Indicated and Inferred Resources are estimates of mineral resources based on the available geological information,
with Indicated Resources benefiting from a higher level of confidence than Inferred Resources.
[3] The total exploration potential represents the estimated quantity of mineral resources that could potentially be
delineated through continued exploration activities.
[4] The Plaine du Rhin and Les Coteaux Minéraux exploration permits are currently under review by the relevant
authorities.
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Regulatory filing PDF file
File: 20260914_PR_Arverne_Ressources
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Language: English
Company: ARVERNE GROUP
4 Chemin de Barincou
64000 Pau
France
ISIN: FR001400JWR8
Euronext Ticker: ARVEN
AMF Category: Inside information / Other releases
EQS News ID: 2398290
End of Announcement EQS News Service
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2398290 14-Sep-2026 CET/CEST
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